AS27419: the BIGRIVER network

AS27419 is an internet Autonomous System operated by BIGRIVER (the United States). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27419?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27419 was assigned to BIGRIVER by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27419 currently announces 10 IPv4 block(s), totaling about 41 thousand addresses (40,960 in all), registered in the United States. Services from BIGRIVER are reached through these addresses.

What it means to see AS27419 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27419. That means the other end sits on the BIGRIVER network (the United States). It can be legitimate — a cloud service, an ISP, a CDN — or an unexpected connection worth checking.

How to see every connection and network your devices reach

Tracing one connection's ASN at a time is tedious. Sentinela, by PC Monitor, maps the devices on your network, shows what is exposed to the internet and helps flag suspicious connections and devices — running on your Windows. Meet Sentinela.